/*
 * Copyright 2000-2025 Vaadin Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.vaadin.hilla.crud;

import java.util.Optional;

/**
 * A browser-callable service that can fetch the given type of object.
 */
public interface GetService<T, ID> {

    /**
     * Gets the object with the given id.
     *
     * @param id
     *            the id of the object
     * @return the object, or an empty optional if no object with the given id
     */
    Optional<T> get(ID id);

    /**
     * Checks if an object with the given id exists.
     *
     * @param id
     *            the id of the object
     * @return {@code true} if the object exists, {@code false} otherwise
     */
    default boolean exists(ID id) {
        return get(id).isPresent();
    }

}
